Fixed attestation properties reading.

Since attestation properties are replaced by generic values in GSI
builds, attestation fails on GSI builds. Hence attestation properties
read with below priorities so that attestation could pass on GSI
builds also.
1) ro.product.vendor.<device-id>
2) ro.product.<device-id>

Bug: 383989061
Test: atest VtsAidlKeyMintTargetTest
Change-Id: Ibae35957aceb49bf8ac20bd2725df6fbe990056a